1.2017×
2.0.75÷
3.
4.(3-1.4 )×
5.3-
6. ×39+ ×27
7. -0.25
8.5- ×21
9.
10. FV69i8JFfFLDvb5MEN7qggfK3eqCnLKrbRq1Vj//Hs1b6OMg3FFog51aioAVR50/